feat: 支持动态修改管理后台站点标题

- 从本地存储读取自定义标题，替代硬编码默认标题
- 在布局组件中提供更新标题的方法并注入到设置页面
- 修改站点标题时同步更新本地存储和页面标题

cwd-admin/src/router/index.ts

@@ -71,7 +71,8 @@ export const router = createRouter({
 });
 
 router.beforeEach((to, from, next) => {
-	const defaultTitle = 'CWD 评论系统';
+	const storedTitle = localStorage.getItem('cwd_admin_site_title');
+	const defaultTitle = storedTitle || 'CWD 评论系统';
 	if (to.meta && to.meta.title) {
 		document.title = (to.meta.title + ' - ' + defaultTitle) as string;
 	} else {

cwd-admin/src/views/LayoutView/index.vue

@@ -179,6 +179,7 @@ import packageJson from "../../../package.json";
 
 const DOMAIN_STORAGE_KEY = "cwd_admin_domain_filter";
 const API_BASE_URL_KEY = "cwd_admin_api_base_url";
+const SITE_TITLE_KEY = "cwd_admin_site_title";
 
 const router = useRouter();
 const route = useRoute();
@@ -191,7 +192,7 @@ const apiVersion = ref("");
 const checkedApiBaseUrl = ref("");
 const apiVersionError = ref("");
 const versionModalVisible = ref(false);
-const layoutTitle = ref("CWD 评论系统");
+const layoutTitle = ref(localStorage.getItem(SITE_TITLE_KEY) || "CWD 评论系统");
 
 const themeTitle = computed(() => {
   if (theme.value === "light") return "明亮模式";
@@ -255,16 +256,29 @@ async function loadVersion() {
   }
 }
 
+function updateTitle(newTitle: string) {
+  layoutTitle.value = newTitle;
+  localStorage.setItem(SITE_TITLE_KEY, newTitle);
+  const pageTitle = route.meta.title;
+  if (pageTitle) {
+    document.title = `${pageTitle} - ${newTitle}`;
+  } else {
+    document.title = newTitle;
+  }
+}
+
 async function loadDisplaySettings() {
   try {
     const res = await fetchAdminDisplaySettings();
-    layoutTitle.value = res.layoutTitle || "CWD 评论系统";
+    const title = res.layoutTitle || "CWD 评论系统";
+    updateTitle(title);
   } catch {
-    layoutTitle.value = "CWD 评论系统";
+    // 忽略错误，保持当前值或默认值
   }
 }
 
 provide("domainFilter", domainFilter);
+provide("updateSiteTitle", updateTitle);
 
 onMounted(() => {
   loadDomains();

cwd-admin/src/views/SettingsView/index.vue

@@ -510,7 +510,7 @@
 </template>
 
 <script setup lang="ts">
-import { onMounted, ref, type Ref } from "vue";
+import { onMounted, ref, type Ref, inject } from "vue";
 import {
   fetchCommentSettings,
   saveCommentSettings,
@@ -1038,6 +1038,8 @@ async function saveFeature() {
   }
 }
 
+const updateSiteTitle = inject<(title: string) => void>("updateSiteTitle");
+
 async function saveDisplay() {
   savingDisplay.value = true;
   message.value = "";
@@ -1046,6 +1048,10 @@ async function saveDisplay() {
       layoutTitle: adminLayoutTitle.value,
     });
 
+    if (updateSiteTitle) {
+      updateSiteTitle(adminLayoutTitle.value);
+    }
+
     showToast(res.message || "保存成功", "success");
   } catch (e: any) {
     message.value = e.message || "保存失败";